Miller CS Series Kullanıcı El Kitabı - Sayfa 15

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Trouble

Erratic arc

Porosity in weld.

SECTION 6 − ELECTRICAL DIAGRAMS

When using DC, check polarity, and/or polarity of welding cables.

When using AC, check welding power source High Frequency control setting, and be sure it is operating

continuously.

Select proper size and type tungsten. Properly prepare tungsten according to Section 7.

Use proper arc length. Arc length may be too long or too short.

Make sure base material is clean and free of contaminates.

When using AC, slow travel speed can cause erratic arc. Adjust travel speed.

Check for proper gas flow rate. Check manufacture's recommendations.

Check and tighten gas fittings.

Make sure base material and filler material is clean and free of contaminates.

Check for impurities and moisture in gas lines. Purge if necessary.

If torch is water cooled, check torch and cables for water leaks. Repair or replace if necessary (see Sec-

tion 5-1).

BROWN

GREEN

Torches With Single Trigger

GREEN

WHITE

BROWN

Torches With Double Trigger

GREEN

BROWN

WHITE

YELLOW

GREY

PINK

Torches With Trigger And Potentiometer

Remedy

MAINTAINED (LATCHING) SWITCH

INCREASE

POTENTIOMETER

OM-251981 Page 11